For multi-coloration 3D printing, a regular twin extruder 3D printer, one that includes a one mount for the dual nozzles, is good enough. But don’t be expecting it for being as rapid as an individual extruder 3D printer, considering the additional weight on the print head influences the print speed. https://how-to-make-grape-wine67161.blog5star.com/30079508/the-2-minute-rule-for-multicolored-3d-printer